so tonight, i'm proud to launch a new campaign to educate the kids on the dangers of wheat. move over mcgruff the crime dog! it's time for "mcgnaw the gluten-free beaver." [cheers and applause] hi, mcgnaw! >> hey, stephen! hey, kids! [cheers and applause] >> stephen: mcgnaw, i understand you've got an important message for today's youth. >> yeah! kids, stay away from wheat if you want to grow up big and strong like your old pal, mcgnaw! yom yom yom! >> stephen: now what if someone tries to offer them wheat, mcgnaw? >> well, just say "gnaw"! then tell someone you trust, like a parent, or a teacher -- or a beaver! [ laughter ] >> stephen: great advice. so what "should" kids eat? >> well, instead of wheat, you can eat healthy things like fruits or vegetables or wood! [ laughter ] >> stephen: that's right, kids. wait, what was that last one? >> wood! yom yom yom! [ laughter ] >> stephen: okay, um, mcgnaw, i'm not entirely sure eating wood is good idea. [ laughter ] >> no, stephen-- it's a great idea! leaf it to beaver-- it's incredi-bark-able! laugh -- [ laughter ] >> stephen: i